Ineed with this question, can someone me out? ? and if . you understand, show work, so i could understand that would greatly be appreciated!

Name the most appropriate metric unit for each measurement

Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8

What is 1/3x5 on anuber line what does it look like on a number line